Mining machine



DBC. 26, M. p HOLMES MINING MACHINE Dec. 26, 1933. M p HOLMES 1,941,007

MINING MACHINE Filed July 14, 1950 3 Sheets-Sheet 2 E .3. ff 9 71 7Z Il 5755 d 73 70 ||||u|||| f 9 f j e Z5 Z Z565 577975! 7935 57 /Zy I 2 "7 59": .i L a Q llf\ l '1" 'i i n E Vig l 45 ai@ J @7 1 45 57 :51 Wil fl l I. 63,/

Dec. 26, 1933. M, P HOLMES 1,941,007

MINING MACHINE Filed July 14, 1930 3 Sheets-Sheet I5 Eig. 5.

' I machine.

Patented Dec. '26, k1933 Y nuire srArEs PAT-ENT @SPICE 1,941,007 MINING' MACHINE Morris P. Holmes, Claremont, N. H., assigner to SullivanlvlachineryCompany, acorporation of i Massachusetts Y Application July 14, 1930. serial No. 467,790k

41 claims. (ol. 26a- 28) 1 This invention relates to mining machines and more particularly to coal mining machines vof the track cutting, shear cutter type. v

Anv object of thisinvention is to provide an improved coal mining machine.V Another object is to provide anlnip'roved track cutting shearing A further object is to provide an improved mining machine of lthe rtrack cutting, shear cutter type having improved means lfor operating the cutting mechanism. Yet another object is to provide' an improved coal mining machine having` improved cutting mechanism and improved means for guiding the cuttingfmechav nism during the cutting operation.- Stillanother object is to provide an improved cutting mechanism including a pivoted kerf cutterv and improved meansior swinging the ker cutter about its pivot and for effecting rectilinear sumping and with.

for purposes ofillustrat'ion one form which the invention may assume inpractice In these drawings,- Fig. 1 isa plan view of an illustrative embodiment of theiinproved mining machine;

Fig. 2 is a side elevationalview of themachine.l

shown inY Fig. 1

Fig. 3 is an enlarged horizontal sectional view? taken substantially on line 3.3 of Fig. 2v;

jFig. 4 is a longitudinally extending verticall sectional Aview taken substantially on line 4--4Y of Fig.3;

Fig. 5 is a transverse.vertical-sectional' viewv Y and supporting ythe cuttingmechanismr The I 4taken substantiallyT on line 55 of Fig. 2;

Fig.v 6 is a "detail view illustrating the feed sprocket and the cooperating guide sheaves; and

Fig. 7 is a detail sectional ,View illustrating the" clamp for holding thecutting'mechanismlin posi-v tion on the guidingframe. i Y .f

In the illustrative embodiment of the invention 'there is shown a coalY mining machine of thetrack cutting, shear cutter type generally coin'-` prising a truck l supported by wheels Zfadapte'd'V Mounted on` the truck 1 for horizontal swinging movement 'relative thereto yabout a Verticalaxis as'at 4 is to travel along a mine trackway 3.

an elongated guideway or track 5 on Ywhich is supported for movement therealong. the improved kerf'cutting mechanism generally designated 6. Improved truck propulsion means generally designated 7 is vprovided for propelling the machine valong the mine trackway during transport Now referring to the improved wheeled truckA and the vimproved guiding frame vor track for the cutting mechanism it will'be observed that the truck 1 is ofra fabricated construction comprising parallel longitudinally extending side members 8 herein in the form oi angle irons held in rigid spaced relationship by means of transverse trusses ina usual manner..v Mounted on the truck lsubstantially midway between its endsand sides is an annular frame or swivel bearing 9. Supported'by the angle irons 8 and the upturnediianges A'of the swivel bearing 9 is' a series of rollers 10 sup-` porting a horizontal swivel plate 11 which turns about the axis 4. Secured to this vswivel plate isy an annular bearing 12Y rotatably mounted.v on a bearing sleeve 13 supported by an upstanding cylindrical hub 14 herein formed` integral with the frame'of the swivel bearing.` It will thus be seen that theseelements form a horizontal turntable mounting forV the guiding frame ortrack`5. The improved guiding, frame structure includes paral-f lel longitudinally extendingguide Imembers 15', herein inthe form of channel irons, and extending longitudinally of thel truck av substantial distance in advance of the front end thereof and overlying the truck as clearly shown in Figs. 1 andl 2. Running along the-channel irons as a trackway are` rollers 16 supported by stub shafts 17 secured to the depending iianges of a plurality of angle mem"- bers 18 herein arranged parallel with the channel irons 15 and secured to the bottom plate 19 of the. supporting frame 20 of the cuttingmechanism. It ,will thus be'seen that these elements cooperate to formel what might be termed a rolling supporting structure movable along the guiding frame-5 longitudinally 'extending channel irons of the guiding Yframe 5 are braced by a transverse con-` nectingy frame 21v which together with theplate 11 maintains the channel irons 15in rigid lateral spaced relation. The transverse frame21 is bowed downwardly so as not to interferewith the cutting mechanism when the kerf. cutter isinits lower rearward'position.. For supporting the'forward sus'A endof ythe guiding frame duringfoperation ofthe n `cuttigmechanism there are'provided at opposite sides ofthe outer channel irons l'swivel brackets 22 each having pivotally connected thereto ad justable screw jacks 23 and 24. These jacks when positioned between the mine roof and mine floor form an adjustable support for the forward end of the guiding frame 5. During transport of the machine about the mine these jacks may either be disconnected from the swivel brackets or swung Y out of the way in any suitable manner.

Now referring to the improved cutting mechanism and more particularly to the improved driving means therefor, it will be observed that carried by the supporting frame of the cutting mechanism is a motor 25 herein preferably of the reversible electric type having its armatureshaft horizontally disposed and extending longitudinally of the guiding frame 5. .This motoris arranged at the rear side of the supporting frame 20 and at one side of the longitudinal vertical center of the 'guiding frame, as shown in Fig. l. Secured to the forward end of the motor 'armature shaft, as

shown in Fig. 3, is a bevel pinion 26 meshing with l ter bar 33. :This cutter bar. is arranged edgewise to swing in a vertical plane midway between the sides of the guiding-frame and is supported for swinging movement .by a bearing bracket 34 attached to the cutterbar and rotatably 'mounted at 35 on'a` bearing support member 36. Also for guiding the cutterbar during its swinging movement thereV is provided a circular flange 37 with which a grooved guide and abutment member 38, attached to the cutter bar, cooperates. This circular flange 37 as shown in Fig. 2 is provided with end abutments 39 with which the member 38-is engageable to limit the up and down swinging the supporting. frame 20. -i 40 and supported thereby is a bearing sleeve 42 movements ofthe cutter bar. Again referring to the drivingmeansfor the cutting mechanism t: it will be. noted that the spur gear 3i) is provided with alhub- 40 keyed to a horizontal shaft 4l arranged parallel with the shaft 28 in advance thereof and likewise suitably journaled within Surrounding this :hub

onwhich the cutter vchain sprocket 31 is journaled, a` suitable retaining Yring 43 suitably attached to the hub-40 holding the bearing and sprocket in position `on. the hub. The-spur gear 30is con-l :nectible with the cutter chain sprocket 3l by means of .a pin clutch 44 comprising slidable clutch pins 45 guided in apertures 46 formed in the' gear 30. These clutch pins cooperate with sockets or jaws 47 formed in the hub -of the cutter "2 l chain sprocket and are movable into and out of their clutched position by means of a shipper member 4 8. The shipper member is slidably mounted on a bearing sleeve carried by a cylindrical support 49 of a detachable bearing plateV 50 secured to the supporting frame 20. -This shifting member 48 for the clutch pins has secured thereto an annular grooved member 5l with which a shipperyoke 52m-operates, this shipper yoke o being fixed to a vertical shaft rhaving an operat-f ingfhandle 53 conveniently arranged atthe top of ythe supporting frame 20.

1In specifically describing the improved 'mechanismfor -swinging the Acutter bar "-3 about its p'ivot, it will be notedthat thegear 30 consti-A .elutch 59.

tutes a driving element for the transverse shaft 41, and connected to this shaftby a semi-permanent clutch 54 is an alined shaft 55 likewise suitably journaled within the supporting frame 20. Fixed to this shaft for rotation therewith is a worm 56 meshing with a worm wheel 57 suitably journaled on a longitudinally extending horizontal shaft 58. This shaft is suitably journaled within the supporting frame 26, and the worm wheel 57 is connectible with this shaft to effect driving of the latter by means of a multiple disc Securedto the forward end `of and driven by the shaft 58 is a worm 60 meshing with a worm wheel 6l keyed to a transverse shaft 62 suitably journaled within the supporting Aframe v20.

Thisshaft 62 is arranged parallel with and in advance of the alined shafts 41, and has herein formed integral therewith a spur pinion 63 meshing with the teeth of an arcuate rack or gear segment 64 attached to the cutter bar 33. It will therefore be evident that when thegclutch59 is applied the cutter bar maybe swung about its pivotinY one direction at a relatively high bar-positioning speed through the worm gears 56, Y57, shaft 58, worm gearsi), v6l and spur pinion 63 vmeshing with the gear segment 64 attached to the cutter bar 33.

` To effect swinging movementV ofthe cutter bar in either of opposite directions at a relatively slowspeedappropriate for cutting there is provided a bevel gear 6o (see Fig. 5) keyed to the shaft 55 and meshing with a bevel gear 66'secured to a vertical shaft suitably journaled within the supporting frame 20. YThis bevel gear 66 meshes with a reverse bevel 67 loosely journaied on a sleeve 68 in turn loosely journaled'on the `shaft 55. Splined to this sleeve is a jaw clutchv menivber 69 having clutch teeth connectible with clutch teeth carried by the reverse bevels 65, 67. AThis clutch member4 is provided with a suitable ship-l per yoke 76y having an operating lever`7l. Keyed* to the outerend of the sleeve 68 isA a spur gear 72 meshing as shown in Fig. 3 with a spurgear 73 keyed to a horizontal'shaft 74 arranged parallel with and in advance of the shaft 55 andlikewise suitably `journaled in the supporting frame 20. Herein,` formed integral with this shaft, is a worrn'75 meshing with a worm' wheel176 coaxial with the worm wheel 57 and suitablyjournaled on the shaft 58. This 'worm wheel is'connectible with the shaft 58 by a multiple disc clutch 77. The operating means for the friction clutches 59, 77 includes a clutch member 78 interposed between the worm wheels 76 and 57 4and slidably mounted on the shaft 5 8. This clutch actuating member is provided with suitable shipper mechanism including a shipper yoke 79 secured to a vertical shaft having an operating handie 80 arranged at the top of the supporting frame 20 in adjacency with the handle 53 referredto above.

an application of the clutch 77 (it being understood that the clutch 59 is released), and when one or the other of the reverse bevels 65, 67 is connected with the sleeve 68 the cutter bar may be swung about its pivot in either of opposite It will thus be seen that upon directions at a relatively slow cutting speedy through spur gears 72, 73, shaft 74, worm gears 75, 76, shaftV 56, worm gears 60, 61 and the spur pinion 63 meshingl with the gear segment V64 attached to the cutter bar 33. The worin gears 66 and 6 1 are self-locking andautomatically maintain, when the clutches 59, 77 are releasedythev cutter bar in its differentiangular positions about its pivotal axis.

shaft `104 is arranged in the central longitudinal 'Now referring to the mechanism for moving the cutting mechanism along the guiding frame or track 5 it will be observedthat journaled on a bearing sleeve supported by the shaft 58 is a feed operating member herein in the form of a chain driving sprocket engaging a'iflexible yfeeding element 86 herein in the form of aloose link feed'v chain. This Vfeed chain is guided relative to the feedY sprocket 85 by means of guidesprocketsjor sheaves 87 arranged on parallel-axes at opposite sides of a vertical plane including the chain sprocket'axis, and this feed chain passes around these guide sprocketsiand is connected at its forward end 'at88 to one side of theforward end of the guiding frame and atts rear end'at 89 to one side ofthe rearward end of the guiding frame, this feed chain lying alongthe top ofthe guiding frame as shown in Figs. 1 and 2.: In the present construction the chain sprocket 85 may be driven in either of opposite directions ata relatively slow speed through thereversemechanisrn 65, 67 and the worm gears 75, '76 and the chain" sprocket 35 is connectible with the worm wheel 76 by a sliding jaw clutch- 90 keyed to the Y hub of the chain sprocket and having clutch teeth connectible with the teeth of a clutch vmember 91 keyed to the hub 'of the Worm wheel '76.l Suitable shifting mechanism is provided for the jaw clutch including shipper ryoke'92 secured Ato a `transverse shaft having a suitable operat.

ing lever 93. It will thus be seen that the cutting mechanism maybe fed either forwardly or rearl wardly along the guiding frame 5 under the control of the jaw clutch 90 and that the feed may be disconnected lfrom the motor at will simply by releasing this jaw clutch. For holding the cutting mechanismin its different positions along the guideway 5 there is provided a clamp member 94 having serrations on its inner surface engageable with the outer surface of the adjacent channel iron15 and operatedlby a set screw threadedly' engaged with va kbracket 95 secured to the fiange of the Yangle member v18 as shown in Fig. 7. This set screw has a pivoted operating handle 96 and is connected Ato the clamp member 94. When the set screw is tightened the clamp grips thev channel iron thereby locking the cutting mechanism in -position on the lguiding trame 5.

The truck propulsion mechanism'here'in includes a iinal driving element on the cutter {sup-I porting frame 20 which is engageableqwith an initial truckdrivingelement on the truck when the cutting mechanism is in' a predetermined position, i. ejits rearmost position, on theeguid-k ing frame; VIn'specilcally 'describing'this truck propulsion mechanism it will be noted that keyed to the shaft4l', as shown in Figs. 3 and 5, is al or idler gear 101 suitably rotatably supported bythe frame 20 and meshing with and driving a spur gear 102. This-spur gear'102, when the cutting mechanism is in itsv eitreme rearward position on the guidingv frame;v overlies and isv connectible, by means of a coaxial spur gear 102' and a clutch 103', with a spur-gear 103 keyed toa vertical shaft 104 as shown in Fig, 5 e Suitablev operating means for the clutch103 is provided and includeseashipper yoke 104', operating"rod'105 and an operating handle 106 arranged at the rear end of the guiding frame. The

vertical. center of the guiding frame and is suitably journaled vwithin a bracket 105 .secured pto the swivel bearing. 14. vHerein formed integral with the shaft 104 is a bevel gear 106 meshing with reverse bevels 107 and 108 loosely journaled onj'a horizontal shaft 109 arranged transversely ofV the truck and 'suitably `iournaled within" a gear housing 110 herein formed integralwith the 1swivel bearing 14. Keyed to the opposite ends of this shaftV are chain sprockets lll'and 112, the former connected through an endless chain 113 to a chain sprocket 1124 secured to the front truck axle, while the latter' is connected by an endless chain 115 engaging a chain sprocketfll secured to the rear truck axle. It will further be evident that'due to the arrangement of the gear 103, shaft 104, yand bevel 'gear 106 with their axes coincident with the axis' of swiveling movement of the guiding frame 5, the

truck` wheels may be driven Yirrespective of the angular position of the guiding frame relative to the truck` thereby eliminating the necessity of having the guiding frame in an exact longitudinally alined position during transport of the machine about the mine,A rEhe reverse bevels-107 and 108 are selectively connectible tothe shaft r109 by multiple disc clutches 11'7'and`118 respectively, having suitable actuating mechanism including a shiitable clutch applying member '119 and a cooperating shipper yoke 120. It will thus be seen that when the cutting `mechanism is in its rearmost e position on the guiding frame 5 with the iinal driving gear'102 on the supporting frame 20 fclutched to the initial. driving' gear 103 on the truck, the'truck wheels mayv bedriven in` either of opposite directions VVat a relatively high transport speed by the shaft 41', bevelgears 94, 95, the spurgear train 100,101, 102,102 103, oneV or thev other of the reverse bevels V107, 108 and sprocket connections 111,112, 113, 114, 115,'and116. f,

`A frictional braking device 121i secured to the rear truck wheel axle is employed for controlling tionary during the cutting operation; This braking device is. provided `with suitable' operating means including abrake lever 122 as 'shoWnin-.

Fig. 2. Electrical energy is supplied tof the driving motor 25 through a usualy flexible conductor cable 123 wound upon a usual vcable reel 124 suitably rotatably mounted on the rear end `of the cutter, supporting'frame 20, and this cable reel.

isconnected throughv usual flexible conductor elements to the usual electrical controlling apparatus for the motor 25. For4 driving "this cable reel to windfin or pay outthe conductor vcable 123 as the machine moves along the mine track' way there is 'provided as shown in Fig. 3, `a spur referred to;

128 to a pulley 129 secured to the cable reel 124. Engaging the drivingv belt 128 is an adjustable ias v idler pulley 130 which when in its belt tightening-position causes thev cable reel to be driven by the pulley 127. When this pulley 130 is swung l upwardly the driving belt 128 is loosened-permitting the belt t-o slip and Ythereby interrupting the drive between the pulleys 127 and 129.

lThe Vmeans for adjusting the pulley 130 includes I able manner.

a transverse operating rod having a usual ad- `iusting lever 133. By swinging the lever 133 it will be yevident that the idler pulley 130 may be raised and lowered at will.

rIhe general mode of operation of the improved mining machine will now befbriefly described. The machine is propelled about the mine by the motor through the gear. train26, 27, 29, 30, 97, 98,100, 101, 102 and 103 at a relatively high speed and in either of opposite directions under the control 'of the reversing mechanism 107, 108, 119. During Ytransport of the machine about the mine the guiding frame and cutting mechanism aredisposed in the position shown in Figs. 1 and 2 with the cutting mechanism held in its rearmost position and the final gear 102 of the cutting mechanism clutched to the initial gear 103 on the truck.v As previously mentionedthe jacks 23, 24 are either detached from the mining frame or swung up out of the way in any suit- When the working face is reached and it is desired to insert a vertical or shear cut in the coal face directly in advance of the machine, the jacks 23, 2li are set up between the v mine roof and mine iioor thereby rigidly supporting the forward end of the guiding frame in themanner shown in Fig. 2. The clutch 69 is then shifted into a positionto connect the bevel gear to the sleeve'land upon connection of the clutch the cutting mechanism is fed a slight distance forwardly relative to the guiding frame, the clutch 163' having of course disconnected gears 102, 103, the clutches 69, 90 thereafter being released. is then applied and the cutter bar 33 is swung upwardly by power throughr the train of mechanism including pinion 63 meshing with the gear segment-S'attached to the cutter bar at a relatively high bar positioning speed. vl/"hentlie outer extremity ofthe cutter bar attains a position adjacent the mine roof, the clutch 77 is released and the` self-locking worm gears 60, V61 automatically hold the cutter bar in this position. The clutch 69 is then adjusted to connect the proper bevel gear 6.5, 68 in driving relation with the sleeve 69 and upon connection of the clutch 90'the feed sprocket 85 is rotated in aldi-f rection to eifect forward rectilinear vfeeding movement of the cuttingmechanismrelative to vthe cutting mechanism is fed, rearwardly rectilinearly relative to the guiding frame at a slov.7 cutting speed to effect the withdrawal movement of thecutter bar. YThe parts are then returned to ,their transport position as shown in Fig. 2 and themachine isY bodily propelled along the mine trackway to another working place. IfV it is desired to cut a kerf at an angle relative to the central longitudinal vertical plane of themachine this may be accomplished simply by swinging the guiding frame 5 laterally about its axis ofV swiveling movement. vThe jacks 23, 24 are then adjusted and the cutter bar surnped in, swung downwardly in its plane and withdrawn from the coal inthe manner described above.

- It will also be noted that the guiding frame may The friction clutch 77Y be swiveled into various .angle positions-relative tothe truck andvthat vunder certain `conditions kerfs may be out inthe coal at a substantial right .angle to `the longitudinal meridian kline of the machine. 'Ihe motor 25 is operative to effect drive vofthe truck wheels irrespective 'of ,the angular; position oft thev guiding frame about its swivel relative to the truck, thereby facilitating movement of the machine into itsl udifferent cutting positions and-at certain times permitting movement of the umachine when the guiding frame isA disposed ata substantially right .angle to .the longitudinal. dimension of the 5 machine. As` previously mentioned'the brake 121A is used to hold the machine during cutting 'operation andto Vcontrolthe movement ofthe Amachine,

along a steeply Vinclined traclway. VThese and various other advantages andmodes of use .of the improvedv mining machine willbe clearlyapparent to those skilled in the art.A i

As a' result of this invention it will be noted thatan improved coal mining machineof the track cutting shear cutter type is provided having improved means for drivingV and adjusting the cutting mechanism and for guiding the cutting mechanismduring the cutting operation. It will further be noted that by the provision kof the improved guiding frame structure it is possible to cut kerfs invcoal when the vmachine is supported on a curved track, this vbeing an especiallydesirable feature when cutting room necks. Itwill further. be evident Athat by the provisionfof a stationary guidingV frame `mounted on the truck and along which the cutting mechanism moves and guided during cutting operation,` it .is possibleto effect the cutting koperation while supported. on an uneven trackway, the cutting mechanism vbeing wholly independent of the mine trackway for itsguiding function during the cutting operation. o

While there is inv this-application specically describedkone Aform which this 1 invention may assume in practice, it will be understood that this form of the same is shownfor purposes of illustration and that the invention maybe modied and embodiedA in variousother forms without departing from its spiritfrorthe scope of the appended claims.V ,f Y

v What I claim as new and desire to secure by Letters Patent is: i y

1. Ina mining. machine, a portable support, f

an elongated'` guiding frame pivotally mounted thereon for horizontal movement relative thereto, kerf cutting mechanism mounted on said guiding vframe for movement wtlflerealong'andV having a driving motor, 'and devices driven lby said motor and v.operative virrespective of the anguiarV position of said guiding frame about its j pivotal axis for bodily propelling the machine. 2. In a mining machine, a portable support, anelongated guiding frame pivotally mounted thereon forA horizontal swinging movement relative, thereto, kerf cuttingrnechanism mounted on said guiding frame for movement therealong,

a motor on said guiding frame, devices driven by i said .motor forr actuating said cutting mecha-` nism, and devices driven by said motor operative irrespective of the angular position of lsaidguiding frame about its pivotalvaxis for bodily propelling the machine.

3. In a mining machine, a portable support, an elongated. guiding-frame pivotally mounted thereonfor horizontal swinging movement relative thereto, kerfv cutting mechanism mounted on saidguiding framefor movement therealong,

ing frame for movement therealong and includ-l ing a motor, and devices driven by said motor for driving the truck wheels irrespective of the position 'of said guiding frame about its pivotal axis relative to said truck'. i

, 5.,.In a mining machine, 'a' wheeled truck` adapted to travel along a trackway, an". elongated guiding frame pivotally mounted on said truck for horizontal swinging movement relative thereto, kerf cutting mechanism mounted on said guiding frame for movement therealong and including a motor, and devices driven'by said motor and operative irrespective of the position of said guiding frame about its pivotal axis for driving the truck wheels to propel the machine.

6. In a mining machine, a wheeledl truck` adapted to' travel along a trackway, an elongated guiding frame pivotally mounted on said truck` for horizontal swinging movement .relative thereto, kerf cutting mechanism mounted on said guiding frame for movement therealong and including a motor, devices driven by said motor foractuating said cutting mechanism, devices driven` by said'motor forfmoving said cutting mechanism along said guidingframe, and devices driven by said motorfand operative irrespective of the position of said guiding frame about its pivotal axis relative to said truck for driving the truck wheels to propel the machine.

7. In a mining machine, Va .portable support,

an elongated guiding frame pivotally mounted on said support for. horizontal swinging movement relative thereto, kerf cutting mechanism mountedon said guiding frame for movement therealong, and motor operated devices for moving said cutting mechanism relative to said guiding frame including a feed operating member rotatable on' an axis extending longitudinallyof said guiding frame, and acooperating flexible feeding element engaging said feed operating member and connected to the opposite endsof 'L said guiding frame.

8. In a mining machine, a portable support, aguiding frame pivotally mounted onsaid support for horizontal swinging movement relative thereto, kerf cutting mechanism mounted on said guiding frame forfmovement therealong, and motor operated devices for moving said cutting mechanism relative to said guiding frame including a feed operating memberrotatable on an axis extending longitudinally of said guiding frame, a cooperating flexible feeding element engaging said feed operating member and connected tov the opposite .ends of said guiding frame, and motor operated devices for rotating'v saidfeed operating member in `either of opposite directions ata relatively slow cutting speed.

9. In a mining machine, a wheeled Vtruck adaptedto travel along a trackway, an elongated guiding frame pivotally mounted onsaid truck for horizontal swinging movement relative thereto, kerf cutting mechanism mounted on said guiding frame for movement therealong including a motor, and devices driven byysaid motor and including a reversing mechanism carried by' said truck between the truck wheel axes for driving the truck wheels in either of opposite directions; v

10. In a mining machine, a wheeled truch adapted to travel alonga trackway, a guiding frame pivotally mounted on said truck for horizontal swinging movement relative thereto, kerf cuttingA mechanism mounted on saidk guiding frame for movement therealong including a motor, and devices driven by said'motor and including a reversing mechanism carried by said truck beneath the latterfor driving the truck wheels in either 0f opposite directions while said motor runs continuously in the samedirection.

11. In a mining-machine, a guiding frame and devices for supporting said guiding frame including a swivel bracket on said guiding frame and separate oppositely acting jacks pivotally mounted on said bracket for independent swinging movement relative thereto.v

12. In a mining machine, a guiding devices for supporting saidk guiding frame including swivel brackets carried at the opposite sides of said guiding frame, each of said brackets having a plurality of screw jacks pivotally connected thereto for independent swingingmovement relative thereto. Y

13. lIn a mining machine, a,l wheeled truck adapted to travel along a trackway, a guiding frame pivotally mounted on said truck forhorizontal swinging movement relative thereto, kerf cutting mechanismr` mounted on said guiding frame for movement therealong,rand devices including a power actuated element on saidkerf` frame and 14..Ina mining machine, a Vwheeled truclr i adapted to'travel alonga trackway,a guiding frame pivotally mounted on said truckfor horizontal swinging movement relative thereto,--kerf cutting mechanism mounted on said guiding frame for movement therealong and including apivoted kerf cutter and a driving'motor therefor, and devices` driven by said motor and operativejwhen said kerf cuttingv mechanism is ,in a predetermined position on said guidingframe for driving the truck wheelsv irrespective of the angular position of said guiding frame relative to rsaid truck.

said-guiding frame for driving the truck wheels irrespective of the angularposition of said guiding frame relative ,to said truck.

16. In a mining machine, a portable supportga guiding frame pivotally mounted on said support for horizontal swinging movement relativethereto, kerf cutting mechanism` mounted on said guiding'frame for movement therealong and including a frame,`a kerf cutter pivotallymounted l l5. In a mining machine, a wheeled truckl adapted to Atravel along av trackway, Va vguiding on -said frame and a driving motor on said frame for actuating said kerf'cutter, and devices for supplying electrical energy to said motor includingpower supply and control devices carried by said -kerf cutter supporting frame, said power supply devices including a power conductor windingreel mounted on said saidkerf cutter supporting frame and movable therewith during the cutting operation. l K

17. In a mining machine, a portable support, van elongated guiding frame pivotally mounted thereon for horizontal swinging movement relative thereto, kerf cutting mechanism mounted on said guiding frame for movement therealong and having a driving motor, and devices. driven by said motor and operative irrespectively of the angular position of said guiding frame about its pivotal axis for bodily propelling the entire machine and including releasable devices having an element movable along the axis of pivotal movementof said guiding'frame.

13. In a mining machine, a wheeled truck adapted to travel along a trackway, an elongated guiding frame pivotally mounted on said truck i Y for horizontal swinging movement vrelative thereto, kerf cutting mechanism mountedon said guiding frame for movement therealong, and devices including a* power actuated element on said kerf cutting mechanism, a cooperating element on said truck, said elements being operative when said kerf cutting mechanism is in a' predetermined position on said guiding frame and said elements are connected in driving relationfor driving the truck wheelsirrespective of the angular position of the i guiding frame relative to the truck.v

19. lIn a mining machine, a frame, a kerf cutter mounted thereon and including a cutter chain driving sprocket, a motor on said frame, driving connections between said motor and said kerf cutter including a kerf cutter driving element coaxialwitli said sprocket, a horizontal shaft driven thereby, and mechanism for bodily feeding the machine during the cutting operation including a parallel shaft, gearing connecting said'shafts, a worm driven bysaid parallel shaft, and a worm wheel meshing with said worm.

20.' amini-ng machine', a frame, a kerf cutter mounted `thereon and including a cutter chain driving sprocket, a motor on said fra-me,- driving connections between said'Y motor andfsaid kerf cutter includingva kerf cutter driving element co'- aXial with said sprocket, a horizontal shaft driven thereby, land mechanism for bodily feeding the machine during `the cutting operation including a parallel shaft, gearing connecting vsaid shafts, a Worm driven by said parallel shaft, a worm wheel meshing with saidfworm, afeed memberv coaxial with and driven by said worm wheel'.

2,1. In a mining machine, a frame, a kerf cutter pivotally mounted thereon, a motor on said frame, driving connections between said motor and said korf cutter including a kerl cutter driving element alined with the kerf cutter pivot, a shaft driven thereby, reversing mechanism coaxial with saidlshaft,"` and mechanism driven through said reversing'f'mechanism for bodily feeding the machine in opposite` directions during the cutting .ial with said sprocket, mechanism driven from one ing plural speed gearing driven by said shaft" and a shaft driven through said gearing and'disposedl on an axis extending longitudinally of said frame.

23. In a. mining machine, a frame, a kerfcutter pivotally mounted thereon and including a cutterA chain driving sprocket, a motorV on said frame, driving connections between said motor and saidv kerf cutter including a keri cutter driving element; a shaft driven by said driving element and coaxend of said shaft for swingingv said kerf cutter, mechanism driven from the same end of said shaft for feeding the machine at a cutting speed, and. mechanism driven from the opposite end of said shaft for propelling the machinel at afhigh transport speed.

24. In a mining machine, aframe, a kerf cut.-

ter mounted on said frame for Vvertical swingingl movement relative thereto, a motor on said frame, driving connections betweensaid. motor and said kerf cutter including a-kerf cutter driving element, a horizontal transversely extending'shaft driven by Vsaid driving element, mechanism driven from' one end of said shaft for. swinging said kerf cutter, mechanism driven from the same end of said shaft for feeding the machine at a cutting speed, and mechanism driven from the oppositeendof said shaft for propelling thefmachine ata` high transport speed. D

Y 25. In a mining machine'a supporting frame,.a frame mounted thereon for horizontal swinging. movement relative thereto, kerf cuttingA mechanism carried by said second frame, and mecha-Y nism carried by said second frame for propelling -ie machine including driving elements arranged 11G: with their axes alined with the axis of pivotal movement of said second frame, and a clutch ele ment movable along the pivot axis of said second frame for connecting said elements in` driving relation. Y

26.v In a mining machine, a supporting frame, a frame mounted thereon for'horizontal swing-ing movement relative thereto, kerf cutting mechanism carried by said second frame,.mechanism carried by said secondframe for Vpropellingzthe 120 machine including driving elements arranged with their axes alined with the axismf pivotal movement of said second frame, and mechanism for bodily 'feeding' the kerf cuttingV mechanism relative to said second frame.

2'7. In a mining machine, a'frame, kerf cutting mechanism carried thereby, Aa Ymotor carried by said frame, mechanism `driven by said'motor' for swinging said lrerf cutting mechanism and for feeding the cutting mechanism in opposite directions at a cutting speed including'a reversing gear mechanism, and mechanism driven by said motor for propelling the machine in oppositey directions. at a high transport speed including a reversing gear mechanism separate from said first mentioned reversing mechanism.

28. In a mining machine, a frame, a kerf cutter pivotally mounted on said frame, a motor on said frame, driving connections between said motor and said kerf cutter including a kerf cutter driving element coaxial with the: kerf cutter pivot, .a shaft driven by said drivingelement, mechanism driven by said shaft for feeding the kerf cutter during the cuttingV operation, and mechanism driven by said shaft for bodilypropelling'the machine during transport.

29. In amining machine, a frame, a kerf cut-V ter pivotally mounted on'said frame', a motoren said frame, driving connections. between: said motorand said kerf cutterincluding a kerf cutter 150 driving element coaxial with the kerfcutterpivot, a shaft driven .by said kerf ycutter driving element, mechanism driven from one end of said shaft for feeding the kerf cutter during the cutting operation, and mechanism driven from the opposite end of said shaft for bodily propelling the machine during transport. l

30. In a mining machine, a frame, a kerf cutter pivotally mounted on said frame, a motor on said frame, driving connections between said motor and said kerf cutter including a kerf cutter driving element coaxial with the kerf cutter pivot, a horizontal shaft driven by said'kerf cutter driving element, mechanis'mdriven by said shaft for feeding the kerf cutter 'during the cutting operation, and mechanism driven by said horizontal shaft for bodily propelling the machine during transport.

31. In a mining machine, aframe, a kerf cutter pivotally mounted on said frame, a motor on said frame, driving connections between said motor and said kerf cutter including a kerf cutter driving element coaxial with the kerf cutter pivot, a

horizontal transversely extending shaft driven byr said kerf cutter driving element, mechanism driven `by said shaftA for vfeeding the kerf cutter during the cutting operation, and mechanism driven by said shaft for bodily propelling the machine during transport.

32. In a mining machine, a frame, a kerf cutter pivotally mounted on said frame, a motor on said frame, driving connections between said motor and said kerf cutter including a kerf cutter driving element coaxial with the kerf cutter pivot, a horizontal shaft driven by said kerf cutter driving element, mechanism driven from one end of said shaft for feeding the kerf cutter during the cutting operation, and mechanism driven from the opposite end of said horizontal shaft for bodily propelling the machine during transport. 33. In a mining machine, a frame, a kerf cutter pivotally mounted on said frame, a motor on said frame, driving connections between said motor and said kerf cutter including a kerf cutter driving element coaxial with the vkerf cutter pivot, a horizontal transverselyextending shaft driven by said kerf cutter driving element, mechanism driven from one end of said shaft for-feeding the kerf cutter duringthe cutting operation, and mechanism driven from the opposite end of said shaft for bodily propelling the lmachine during transport.Y f

34. In a mining machine,'a frame, a kerf cutter pivotally mounted on said'frame, a motor on said frame, driving connections between said motor and said kerf cutter including a kerf cutter driving element, a shaft driven by lsaid drivingv element, mechanisml driven by said shaft fory swinging said kerf cutter, mechanismdriven by said shaft for feeding the machine, andv mechanism` driven by said shaft for propelling the machine during transport. Y

35. In a mining machine, a frame, a kerf cutter pivotally mounted on said frame, a motor. on

said frame, driving connections between said mo-f tor and said kerf cutter including a kerf cutter driving element, a shaft driven by said driving element, mechanism drivenfrom .oneend of said shaft for swinging said kerf cutter, mechanism drivenfrom the opposite end of said shaft for feeding the machine, and mechanism driven by said shaft Vfor propelling the machine during transport. f

36. In a mining machine, a frame, a kerf cutter pivotally mounted on said frame, a moto-r on said frame, Vdriving connections between said motor and said kerf cutter including a kerf cutter driving element, a horizontal shaft driven by said'driving element, mechanism driven by said shaft for swinging said herf cutter, mechanism driven by said shaft for feeding the machine, and mechanism driven by said shaft for propelling the machine during transport.

'37. In a mining machine, a frame, a kerf cutter pivotally mounted on said frame, a motor on said' frame, driving connections between said motor and said kerf cutter including a kerf cutter driving element, a horizontal transversely eX- tending shaft driven by said driving element, mechanism driven by said shaft for swinging said kerf cutter, mechanism driven by said shaft for` feeding the machine, and mechanism driven by Y said shaft for propelling the machine during transport.

38. In a mining machine, a frame, a kerf cutter pivotally mounted on said frame, a motor on said' frame, driving connections 1between said motorv Ater driving element, a shaft coincident with the kerf cutter pivot and driven by said kerf cutter driving element, mechanism driven by said shaft for swinging said kerf cutter,y and mechanism driven by said shaft for feeding the machine. m0

40.- In a mining machine, a frame, a kerf cutter pivotally mounted on said frame, a motor on said frame, driving connections between said motor and said kerf lcutter including a'kerf cutter driving element, a shaft alined with and driven by said kerf cutter driving element,

- mechanism driven by said shaft for swinging said kerf cutter, mechanism driven by said shaft for feeding the kerf cutter, and mechanism driven by said shaft for propelling the machine during transport..

4l. Ina mining machine, aframe, akerf cutter pivotally mounted thereon, Va motor on said frame, driving connections between said motor Vand said kerf cutter including a horizontal transversely extending shaft, a kerf cutter driving element, and gearing connecting said shaftV and driving element in driving relation, a parallel lshaft driven by said gearing, mechanism driven by said parallel shaft for feeding the machine 149.

at a cutting speed, and mechanism driven by said parallel shaft for swinging said kerf cutter about its pivot. Y

` MORRIS P. HOLMES. 

